@extra-integer/bit-scan v2.0.0

Gets index of first set bit from left of 32-bit integer (mod37 method).

This is part of package extra-integer.

integer.bitScan(x);
// x: an integer

const integer = require('extra-integer');

integer.bitScan(7);
// 0 (111 => 0)

integer.bitScan(12);
// 2 (1100 => 2)

integer.bitScan(64);
// 6 (1000000 => 6)

references

• Bit Twiddling Hacks: By Sean Eron Anderson